#!/usr/bin/env python
# -*- coding:utf-8 -*-
# @FileName  :arr_sum_32.py
# @Time      :2020/6/23 15:04
# @Author    :Administrator


def _sum(arr, len):
    return sum(arr)


arr = [12, 3, 4, 15]
ans = _sum(arr, len(arr))
print(ans)
